I know I am going to get some haters here on this. I NEVER changed any delivery nozzles on any of my CUCV's ever. I had a few with leaks at seams and changed them with used delivery nozzles. I have changed many injection pumps. I have a local guy that deals with diesels all the time. He told me most fuel problems are with the rotary injection pumps. I trusted him and still do. I put a brand new HMMWV pump on one M1009. It had a hard advance clatter. I switched the delivery nozzles from a HMMWV engine the clatter was still there. It ran fine but it would sound like junk and was a head turner where ever I went. That injection pump lasted less then 9 months. I changed it with a rebuilt one and left the delivery nozzles from the HMMWV in the M1009. It has run fine since. I know a few things about the CUCV's so I am vigilant and always tinkering. I think that is what it takes. No major melt downs to date. Have not walked home at anytime in 20+ years. Got stuck in mud and snow a few times and had a few issues that needed deep thought. The injection pump replacement is a cure all for many starting driving and vehicle drivability issues. It is about a $350-$400 item and worth every penny. No need to turn up fuel and mess with it. It works well as designed IMHO. Do as you wish. But I would lay my $$$$ on the injection pump, a fresh fuel filter, lift pump and intake gaskets and call it a day. Pull the glow plugs bleed the system out and reinstall the glow plugs and start it up. About a 4 hour job start to finish. Now resting, talking and refreshing add time. Good Luck. I am considering the road trip. Do you have an air compressor?